5篇
您的检索式：作者名="He Longjiang"
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| 1 | Elimination of a Retrotransposon for Quenching Genome Instability in Modern Rice显示文摘Transposable elements(TEs)constitute the most abundant portions of plant genomes and can dramatically shape host genomes during plant evolution.They also play important roles in crop domestication.However,whether TEs themselves are also selected during crop domestication has remained unknown.Here,we identify an active long terminal repeat(LTR)retrotransposon,HUO,as a potential target of selection during rice domestication and breeding.HUO is a low-copy-number LTR retrotransposon,and is active under natural growth conditions and transmitted through male gametogenesis,preferentially inserting into genomic regions capable of transcription.HUO exists in all wild rice accessions and about half of the archaeological rice grains(1200–7000 years ago)and landraces surveyed,but is absent in almost all modern varieties,indicating its gradual elimination during rice domestication and breeding.Further analyses showed that HUO is subjected to strict gene silencing through the RNA-directed DNA methylation pathway.Our results also suggest that multiple HUO copies may trigger genomic instability through altering genome-wide DNA methylation and small RNA biogenesis and changing global gene expression,resulting in decreased disease resistance and yield,coinciding with its elimination during rice breeding.Together,our study suggests that negative selection of an active retrotransposon might be important for genome stability during crop domestication and breeding. | Yu Peng Yingying Zhang Yijie Gui Dong An Junzhong Liu Xun Xu Qun Li Junmin Wang Wen Wang Chunhai Shi Longjiang Fan Baorong Lu Yiwen Deng Sheng Teng Zuhua He | 2019 | Molecular Plant2019，12，10： | 2 |
| 2 | Ca^2+ augmentation for enhancement of aerobically grown microbial granules in sludge blanket reactors 显示文摘 | He Longjiang Tay J H Yu Liu | 2003 | Biotechnology Letters2003，25，： | 1 |
| 3 | Effects of microbes and their carbonic anhydrase on Ca《'2+》 and Mg《'2+》 migration in column-built leached soil-limestone karst systems显示文摘 | Li Wei Yu Longjiang He Qiu-fang | 2005 | Applied Soil Ecology2005，29，3： | 1 |
| 4 | Rapid cultivation of stable aerobic phenol -degrading granules using acetate -fed granules as microbial seed显示文摘 | Stephen Tiong-Lee Tay Benjamin Yan-Pui Moy He - LongJiang Joo - Hwa Tay | 2005 | Journal of Biotechnology2005，，115： | 1 |
| 5 | Promoting effect of a calcium-responsive self-assemblyβ-sheet peptide on collagen intrafibrillar mineralization显示文摘Recently,a de novo synthetic calcium-responsive self-assemblyβ-sheet peptide ID8(Ile-Asp-Ile-Asp-Ile-Asp-Ile-Asp)has been developed to serve as the template inducing hydroxyapatite nucleation.The aim of this study was to evaluate the effect of ID8 on intrafibrillar mineralization of collagen making full use of its self-assembly ability.The mineralization experiments were carried out in vitro on both bare TypeⅠcollagen and fully demineralized dentin samples.The calcium-responsive self-assembly of ID8 was revealed by circular dichroism spectrum,8-anilino-1-naphthalenesulfonic acid ammonium salt hydrate assay,attenuated total reflection Fourier transform infrared spectrum(ATR-FTIR)and transmission electron microscope(TEM).Polyacrylic acid(450 kDa)with a concentration of 100μg ml^(-1)was selected as the nucleation inhibitor based on the determination of turbidimetry and TEM with selected area electron diffraction(TEM-SAED).The results showed that collagen intrafibrillar mineralization was significantly promoted with the pretreatment of self-assembly ID8 detected by TEM-SAED,SEM,X-ray diffraction and ATRFTIR.The pretreatment of collagen utilizing self-assembly ID8 not only enhanced intermolecular hydrogen bonding but also contributed to calcium retention inside collagen and significantly increased the hydrophilicity of collagen.These results indicated that peptides with self-assembly properties like ID8 are expected to be potential tools for biomimetic mineralization of collagen. | Zhongcheng Li Qian Ren Sili Han Longjiang Ding Xi Qin Die Hu Ting He Tian Tian Ziqian Lu Linglin Zhang | 2022 | Regenerative Biomaterials2022，9，1： | 0 |
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